Volume Logix and masking
Volume Logix is used to restrict access to particular WWPNs on the fabric for Symmetrix Volumes.
This function can be switched on and off by changing the VMC_State port setting. The Storwize® V3500 system requires that you do not share target ports between a host and the Storwize V3500 system. However, you can still use Volume Logix to protect the system from errors that can occur if the SAN is not correctly configured.
To mask a volume to the Storwize V3500 system, you must first identify the Storwize V3500 ports that are connected to each system. You can identify these ports using the EMC Symmetrix symmask command.
The Storwize V3500 system automatically logs in to any EMC VMAX system that it sees on the fabric. Use the Storwize V3500 lsnode CLI command to find the correct port identifiers.
After you have identified the ports, you can map each volume on each port to each WWPN. The EMC VMAX stores the LUN masking in a database; so you must apply the changes that you have made to refresh the contents of the database to view the changes.